how many different license plates can be made consisting of three letters by four digits?
2 answers
3^4 = 81
I thought order matters in this problem because it says 3 letters then 4 digits.
So should nPr be used?
26P3= 15600
10P4 = 5040
(5040)(15600)= 78624000
So should nPr be used?
26P3= 15600
10P4 = 5040
(5040)(15600)= 78624000